Across
- 3. an element found in carbon dioxide and organic molecules
- 4. a molecule used to build plant cell walls
- 6. plant tissue that carries water from the roots
- 9. the green pigment that absorbs light energy
- 11. an organism that makes its own organic molecules
- 12. tiny openings in leaves that allow gases to move
- 14. a substance that enters a chemical reaction
- 17. the amount of a substance in a given space
- 18. the total mass of living material
Down
- 1. a substance made during a chemical reaction
- 2. a gas released during photosynthesis
- 4. the organelle where photosynthesis occurs
- 5. a factor in shortest supply that slows a process
- 7. a sugar that stores chemical energy
- 8. the process that uses light energy to make glucose
- 10. the form in which plants store extra glucose
- 13. the molecule cells use for usable energy
- 15. the ability to cause change or do work
- 16. the amount or strength of light
- 19. anything that has mass and takes up space